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I use java to print the XML file. but why my file always appear some Special like that(NUL,STX,DC4,VT,...).

What is it? how can I stop printing it?enter image description here

enter image description here

  • Please read [ask] and provide more details including a [mcve] if your question isn't answered after reading the duplicate links. – kjhughes Apr 19 '22 at 04:26

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